Question

A gallon of milk cost $2.90 in 2002. In 2018, it cost

Answer 1

Answer:

The cost of a gallon of milk changed 31%

Step-by-step explanation:

Percent Change

Is the difference between two values of the same variable in different times or conditions, expressed as a percentage of the original value.

The formula is:

$\displaystyle Pc=\left |\frac{v1-v2}{v1} \right |\cdot 100\%$

Where

v1 = original value

v2 = final value

The gallon of milk cost v1=$2.90 in 2002 and v2=$3.80 in 2018. The percent change is:

$\displaystyle Pc=\left |\frac{2.90-3.80}{2.90} \right |\cdot 100\%$

$\displaystyle Pc=\left |\frac{-0.9}{2.90} \right |\cdot 100\%$

Pc = 31%

The cost of a gallon of milk changed 31%